Sökning: "oxygen transmission rate"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden oxygen transmission rate.

  1. 1. Employing Metal Iodides and Oxygen in ALD and CVD of Functional Metal Oxides

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jonas Sundqvist; Uppsala universitet.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; CVD; ALD; tantalum oxide; hafnium oxide; tin oxide; epitaxy; Ta2O5; HfO2; SnO2; XRD; Oorganisk kemi; NATURAL SCIENCES Chemistry Inorganic chemistry; NATURVETENSKAP Kemi Oorganisk kemi; Inorganic Chemistry; Oorganisk kemi;

    Sammanfattning : Many materials exhibit interesting and novel properties when prepared as thin films. Thin film metal oxides have had an impact on the technological progress of the microelectronics mainly due to their electrical and optical properties. LÄS MER

  2. 2. Barrier properties of greaseproof paper

    Detta är en avhandling från Institutionen för kemi

    Författare :Henrik Kjellgren; Karlstads universitet.; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik; Chemical Engineering; Kemiteknik; Greaseproof papers; Air permeance; Coatings; Chitosan; Oxygen Barrier properties;

    Sammanfattning : The barrier properties of greaseproof paper are achieved by extensive beating of the fibres. This treatment results in high costs for energy, both as beating energy and drying energy. A full-scale trial has been performed to investigate the role of the pulp with respect to energy demand and the barrier properties of the final papers. LÄS MER

  3. 3. Effects of plasticizing and crosslinking on the mechanical and barrier properties of coatings based on blends of starch and poly(vinyl alcohol)

    Detta är en avhandling från Karlstad : Karlstads universitet

    Författare :Asif Javed; Karlstads universitet.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Citric acid; Glycerol; Polyethylene glycol; Barrier properties; Starch; Mechanical properties; Polyvinyl alcohol; Adhesion; Cross linking; Extrusion coating; Chemical Engineering; Kemiteknik;

    Sammanfattning : In the last decades, intensive research has been carried out in order to replace oil-based polymers with bio-based polymers due to growing environmental concerns. So far, most of the barrier materials used in food packaging are petroleum-based materials. LÄS MER

  4. 4. Effects of plasticizing and crosslinking on coatings based on blends of starch-PVOH and starch-lignin

    Detta är en avhandling från Karlstads universitet

    Författare :Asif Javed; Karlstads universitet.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Citric acid; Glycerol; Polyethylene glycol; Barrier coatings; Starch; Lignin; Mechanical properties; Poly vinyl alcohol ; Creasing; Adhesion; Cross-linking; Extrusion coating; Chemical Engineering; Kemiteknik;

    Sammanfattning : A barrier material is usually needed on a fiber-based food package to protect the packed food from gases and moisture and thus maintain its quality. Barrier materials presently used in food packaging applications are mostly petroleum-based polymers. LÄS MER

  5. 5. Growth of ZnO/GaN distributed Bragg reflectors by plasma-assisted molecular beam epitaxy

    Detta är en avhandling från Karlstads universitet

    Författare :David Adolph; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Oxides; GaN; distributed Bragg reflector; MBE; molecular beam epitaxy; ZnO; Nitrides; DBR;

    Sammanfattning : This thesis describes epitaxial growth of ZnO/GaN distributed Bragg reflectors by hybrid plasma-assisted molecular beam epitaxy on GaN(0001). The unique hybrid approach employed the same growth chamber for continuous growth of both ZnO and GaN without exposing the layers to the ambient conditions. LÄS MER